402111451 has 16 divisors (see below), whose sum is σ = 469969920. Its totient is φ = 336926880.

The previous prime is 402111431. The next prime is 402111467. The reversal of 402111451 is 154111204.

It is a cyclic number.

It is not a de Polignac number, because 402111451 - 2⁹ = 402110939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (402111431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68490 + ... + 74128.

It is an arithmetic number, because the mean of its divisors is an integer number (29373120).

Almost surely, 2^402111451 is an apocalyptic number.

402111451 is a deficient number, since it is larger than the sum of its proper divisors (67858469).

402111451 is a wasteful number, since it uses less digits than its factorization.

402111451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5874.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 402111451 is about 20052.7167984790. The cubic root of 402111451 is about 738.1004672481.

Adding to 402111451 its reverse (154111204), we get a palindrome (556222655).

The spelling of 402111451 in words is "four hundred two million, one hundred eleven thousand, four hundred fifty-one".